Opening a fresh shipment of hoodies only to realize they fit a full size smaller than the last batch is a D2C founder's nightmare. The factory followed your spec sheet—so what happened? You likely left your measurement tolerances too loose.
1. Critical vs. Non-Critical Specs
Factories sew garments using manual labor. Minor differences are normal, but they must remain within limits. You must categorize your POMs (Points of Measure):
- Critical Fit Zones: Chest Width, Waist, Inseam, Neck Width. These require tight tolerances (±0.25" to ±0.375").
- Non-Critical Zones: Sleeve Openings, Hem sweeps, Body Lengths. These can handle wider tolerances (±0.5").
💡 Quality Control Tip
If your chest spec has a ±0.5" tolerance, a garment cut at the small limit and one cut at the large limit will feel like two completely different sizes to your customers. Keep critical zones tight.